I have a 1996 Dodge 1500 5.9l reg cab. I cannot get the 4x4 to work. The front axle locks in I know this cause I pulled the vacuum off the actuator and sucked until I couldnt move the front axle shafts or the front drive shaft. (I dont think im getting any vacuum?) Next I shifted the transfer case into low range and everything seemed to work ok. But its still not locked in... Is the transfer case vacuum asctuated or when you shift (has a lever) is it automatically locked in? Please help?????